Abstract: Methods and systems for measuring interference reciprocity between uplink and downlink directions in a wireless communications system. Correlation data between uplink and downlink interference, e.g., bit error rate, during transmissions between wireless terminals 104 and base stations 102 is measured. The correlation data is analyzed 106/107/111 to determine if uplink and downlink reciprocity falls within a predetermined range. Adjustment criteria may be determined when reciprocity falls outside a predetermined range. Measurement may be automated 104/102/101 for near real-time results. Systems include means for measuring correlation between uplink and downlink interferences during communication between a wireless terminal and a wireless base station controller 102; and a computer 107/111 for analyzing the correlation.

Abstract: The present invention provides a system and method for determining whether two or more parameters influence one another within a communications network by obtaining a set of measurements for two or more parameters. A correlation and a partial correlation between each of the parameters are then determined. A determination is then made as to whether the correlations and the partial correlations are statistically significant. Thereafter, a determination is made as to whether the two or more parameters, if any, influence one another based on the statistically significant correlations and partial correlations.

Abstract: A method and system are disclosed for identifying one or more sources of co-channel interference within a selected cell in a mobile telecommunications network. The system includes data collecting devices which measure and store interference levels within the selected sell and traffic levels within a plurality of candidate cells, any of which may potentially contribute to the interference. The system further includes a processing element which, for each candidate cell, determines a partial correlation coefficient between the stored interference levels and the stored traffic levels for the candidate cell. The processing element additionally determines the multiple correlation coefficient between the stored interference levels and the stored traffic levels for all of the candidate cells. Based upon the partial and multiple correlation coefficients, the processing element is capable of accurately identifying the candidate cells which contribute to the co-channel interference in the selected cell.

Abstract: A telecommunications system and method is disclosed for providing a cell traffic supervision alarm within a base station (BS) to notify the operator at a Mobile Switching Center (MSC) serving the BS that the BS has had no traffic for a period of time that is unreasonably long. The definition of “unreasonably long” is tied to normal traffic patterns at the BS. An alarm threshold time, which is defined as time between the cessation of all traffic on a BS and the triggering of the alarm, can be calculated based upon a statistical analysis of the traffic history of the BS to determine a time interval such that the probability is acceptably small that under normal conditions the BS would have gone for that entire length of time with no traffic at all. At the expiration of the alarm threshold time, the alarm is activated.

Abstract: A telecommunications system and method is disclosed for improving the accuracy of the Time of Arrival (TOA) information extracted from the Timing Advance (TA) values reported by base stations. This can be accomplished by utilizing an average of m (m=2 or more) consecutive TA values, which will on average have a smaller mean-squared error than using a single TA value. By averaging multiple consecutive TA values to obtain a single measurement of TOA, the accuracy of the location algorithm employing the TOA information can be improved, and thus, the geographical location of a mobile terminal within a cellular network can be more accurately determined. The improvement in the accuracy of the location of the mobile terminal can be applied to both a stationary mobile terminal and a moving mobile terminal.

Abstract: A system and method for improving the accuracy of a location measurement within a telecommunications system is disclosed. A combination of Time Difference of Arrival (TDOA) and Timing Advance (TA) location measurement techniques enables Automatic Location Identification (ALI) with minor modifications to the telecommunications system, whereby the combination exhibits reduced measurement error and resolution of ambiguities present in either technique separately.

Abstract: A system and method for improving the accuracy of a location measurement within a telecommunications system is disclosed. An elliptical search area is defined about an estimated mobile terminal location within the telecommunications system. The elliptical area is an optimum area for locating the mobile terminal, with size, eccentricity, and orientation of the ellipse being determined by the configuration of base stations, the mobile terminal's position, a desired probability of coverage, and the known measurement errors in the quantities measured by the ALI technique.

Abstract: A system for carrying skis and ski poles either by hand or over the shoulder comprises an elongated strap assembly extending between fore and aft ski loops to freely receive the ends of a pair of skis in side-by-side relationship. An adjustment buckle interconnects first and second strap members and their associated fore and aft ski loops to selectively create a transport loop of reduced size for carrying the skis by hand or one of enlarged size for carrying the skis over the shoulder. Fore and aft loops may also be provided to receive a pair of ski poles. In one embodiment, the strap members extend away from the ski loops at locations adjacent the ring members and the strap members are threaded through the ring members to form the pole loops such that as the strap members are drawn in a direction away from the ring members, the size of the pole loops is reduced until the pole loops snugly engage the ski poles.

Abstract: A universal mounting system for attaching replacement gutters to the roof of a building which has roof shingles already in place. It is particularly applicable in those instances in which an elongated hanger strap extends upwardly at longitudinally spaced locations along the length of commonly available gutter hardware. An elongated anchor plate is employed in conjunction with each hanger strap and has a width substantially greater than that of its associated hanger strap. In one instance, the anchor plate is folded about a transverse fold line so as to define a nailing pad and a support pad. An elongated, laterally extending, slot is formed adjacent the fold line to define a mounting strip between the slot and the fold line. The anchor plate is slipped under the roof shingles so as not to be visible and is positioned such that the slot is just exposed, then is attached to the roof by means of a nail piercing the nailing pad only.